www.desatech.com
119678-01C
24
POSSIBLE CAUSE
1. Residues from manufac-
turing processes and logs
curing
1. Turning control knob to HI
position when burners are
cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partially clogged
burner orifice(s)
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Not enough combustion/
ventilation air
1. Metal expanding while
heating or contracting while
cooling
1. Not enough fresh air is
available
2. Low line pressure
3. OD S/pil ot i s p arti al ly
clogged
REMEDY
1. Problem will stop after a few
hours of operation
1. Turn control knob to LO
position and let warm up
for a minute
2. Operate burners until air is
removed from line. Have
gas line checked by local
natural or propane/LP gas
company
3. Observe minimum installa-
tion clearances (see pages
9 through 11)
4. Clean burners (see
Clean-
ing
, page 20) or replace
burner orifice(s)
1. Turn heater off when us
-
ing furniture polish, wax,
carpet cleaners or similar
products
1. Refer to
Air for Combustion
and Ventilation
require-
ments (page 6)
1. This is normal with most
heaters. If noise is exces-
sive, contact qualified ser
-
vice person
1. Open window and/or door
for ventilation
2. Contact local natural or
propane/LP gas company
3. Clean ODS/pilot (see
Cleaning
, page 20)
OBSERVED PROBLEM
Slight smoke or odor during
initial operation
Heater produces a whistling
noise when burners are lit
White powder residue form
-
ing within burner box or on
adjacent walls or furniture
Moisture/condensation no-
ticed on windows
Heater produces a clicking/
ticking noise just after burners
are lit or shut off
Heater shuts off in use (ODS
operates)
TROUbLESHOOTING
Continued
